44 results about "Total hip arthroplasty" patented technology

A system for computer assisted navigation during surgery includes a computer platform that operates to register a target surgical area of a patient. In certain cases, a process includes: obtaining a pre-op CT image of a pelvic region of a patient and intra-operatively obtaining a point cloud data about the pelvic region with a navigated instrument, generating a 3D bone model which excludes non-targeted area such as a femur, and then merging the 3D bone model to the point cloud to register the target surgical area.

A system for computer assisted navigation during surgery includes a computer platform that operates to register a target surgical area of a patient. In certain cases, a process includes: obtaining a pre-op CT image of a pelvic region of a patient and intra-operatively obtaining a point cloud data about the pelvic region with a navigated instrument, generating a 3D bone model which excludes non-targeted area such as a femur, and then merging the 3D bone model to the point cloud to register the target surgical area.

A system for computer assisted navigation during surgery includes a computer platform that operates to register a target surgical area of a patient. In certain cases, a process includes: obtaining a pre-op CT image of a pelvic region of a patient and intra-operatively obtaining a point cloud data about the pelvic region with a navigated instrument, generating a 3D bone model which excludes non-targeted area such as a femur, and then merging the 3D bone model to the point cloud to register the target surgical area.

A system for computer assisted navigation during surgery includes a computer platform that operates to register a target surgical area of a patient. In certain cases, a process includes: obtaining a pre-op CT image of a pelvic region of a patient and intra-operatively obtaining a point cloud data about the pelvic region with a navigated instrument, generating a 3D bone model which excludes non-targeted area such as a femur, and then merging the 3D bone model to the point cloud to register the target surgical area.

The invention discloses a calculation method and system for the optimal placement orientation of an acetabular cup in a total hip joint operation, and belongs to the field of surgical instruments. The calculation method comprises the steps that CT data of a patient is obtained, a three-dimensional model is constructed, point locations in the three-dimensional model are recognized, a three-dimensional coordinate system is established according to a pelvis mark point and a femoral head rotation center point, and the optimal placement orientation of the acetabular cup is calculated; and determining the initial position of femoral motion according to the femoral head rotation center point and the femoral mark point. And drawing a space femoral neck movement range according to the femoral form and a preset hip joint movement range. The centroid of the curved surface is calculated based on the space femoral neck movement range, the rotation center point of the femoral head serves as the starting point and extends towards the centroid to form a ray, and the orientation of the ray in three-dimensional coordinates serves as the optimal placement orientation of the acetabular cup. According to the method, the individualized thighbone shape and the joint movement range of a patient are considered, the optimal acetabulum orientation is given according to different prostheses, and a definite operation target and guidance are given to an operator, so that the dislocation risk after hip replacement is reduced, and the acetabular cup placement reliability is greatly improved.

A dynamic reference base (DRB) and associated method are provided for rigidly affixing an array frame to bone for use in navigated or robotic surgery. The DRB includes a bridge element that includes a connecting rod having a distal end and a proximal end; a clamp coupled to the distal end of the connecting rod; a first and a second pin guide extending distally from the clamp; a locking nut disposed on the clamp; and a clutch coupled to the proximal end of the connecting rod, the clutch being adapted to couple to the array frame. The DRB also includes the array frame, which is couplable to the clutch, and is adapted to include a plurality of tracking markers disposed thereon.

The invention provides an acetabular cup angle and leg length offset measurement system in total hip replacement. A first inertial sensing module detects a first IMU quaternion of a target object; a second inertial sensing module detects second IMU quaternions of the three mark points of the target object and respective coordinates of the thighbone mark points of the target object before and after the replacement; a third inertial sensing module detects a third IMU quaternion of the acetabular cup of the target object; constructing a pelvic bone coordinate system through a calculation module according to the first IMU quaternion and the second IMU quaternion; according to the first IMU quaternion and the third IMU quaternion, the acetabular cup angle under the pelvic bone coordinate system is determined; and determining the leg length offset according to the respective coordinates of the femur mark points before and after the replacement. A plurality of inertial sensing modules are used for measuring and positioning by taking a specific mark point of a human body as a reference, the movement of the acetabular cup can be tracked, the angle of the acetabular cup can be calculated, and the leg length difference before and after an operation is calculated, so that the operation cost is effectively reduced, and the artificial joint implantation precision and the operation efficiency are improved.

Methods include tracking one or more of a leg length or an offset in a patient during a total hip arthroplasty (THA) procedure performed using a navigated surgical system, with an expandable trial femoral assembly. Certain methods include registering a pelvis of the patient to the navigated surgical system; and in various embodiments measuring a leg length or registering a femur to the navigated surgical system. An expandable trial femoral assembly is affixed to a prepared and broached femur of the patient; and the expandable trial femoral assembly is reduced into an acetabular prosthesis. A navigated driver may then be used to adjust an expansion extent of the expandable trial femoral assembly. The navigated surgical system may measure the leg length and the offset in the patient based on the movement of a reference element of the femur relative to a reference element of the pelvis.

A system and method configured to better identify patient-specific anatomical landmarks, measure anatomical parameters and features, and predict the patient's need for surgery within a predetermined time period. In some embodiments, the system and method is configured to predict the likelihood or risk that a patient will require total hip arthroplasty. In some embodiments, the present invention includes machine learning technology Some embodiments of the present invention include a first ML machine configured to received medical images as inputs and identify anatomical landmarks as outputs; a measurement module to measure joint space width, hip dysplasia angles, and / or leg length differential; and a second ML machine configured to receive the anatomical measurements and patient demographic data as inputs and produce a risk or likelihood that the patient will require surgery within a certain time frame.

The present invention provides a hip joint anatomical site prediction system, a pre-operative and post-operative evaluation system, and a storage medium, belonging to the technical field of medical data processing. The system of the present invention includes: an input module for inputting the hip joint image data to be recognized of a patient; a data processing module for inputting the hip joint image data to be recognized into a deep learning network model to obtain the anatomical sites and anatomical regions in the hip joint image data to be recognized; an output module for outputting the recognized anatomical sites and anatomical regions, calculating parameters according to the anatomical sites and anatomical regions, and outputting a predicted pre-operative plan or post-operative evaluation based on anatomical information. The system of the present invention has high accuracy and robustness, not only improves the surgical efficiency of clinical hip dysplasia, but also promotes the digitization of the pre-operative planning and post-operative evaluation systems for total hip arthroplasty, reduces the burden on patients, is conducive to standardizing parameters, and has broad application prospects.

The utility model relates to a kind of dislocation-preventing nursing appliances for total hip replacement in the art of joint replacement nursing, including waist belt, the waist belt outside fixed with bracing plate, bracing plate both sides are equipped with connecting plate, two connecting plates bottom are equipped with leg protector, two leg protectors are connected by connecting assembly, for fixing leg, the bracing plate and connecting plate junction are equipped with limiting component, the limiting component includes with the fixed rotating plate of connecting plate one end, the rotating plate outer wall is fixed with rotating block, the bracing plate side close to rotating plate is equipped with two baffle, two baffle are located rotating plate outside, for the leg movement is limited. The utility model is convenient for fixing and controlling leg, avoid patient excessive activity hip joint, to avoid hip joint secondary injury.

Disclosed in the present disclosure are an acetabular prosthesis angle positioning device for total hip arthroplasty. The device includes a telescopic tripod, a spherical scale instrument, a first fixing member, a main operating rod, a connecting device and an auxiliary operating rod. The spherical scale instrument includes a transparent spherical housing and a connecting ball clamped in the transparent housing, scale marks are arranged on the transparent spherical housing, and mark points fitted to the scale marks are arranged on the connecting ball; the main operating rod is connected to the connecting ball; and the main operating rod is connected to the auxiliary operating rod through the connecting device, and the auxiliary operating rod is hollow.

The utility model discloses an acetabular fossa positioning tool for hip joint surgery, and relates to the technical field of total hip joint replacement. The damping device comprises a mounting frame, a mounting hole is formed in one side of the mounting frame, a damping ball joint is mounted on one side of the mounting frame, a ball body is mounted in the damping ball joint, a connecting rod is fixedly connected to one side of the ball body, a supporting rod is arranged on one side of the connecting rod, and the supporting rod is fixedly connected to the other side of the mounting frame. An extension rod is arranged on one side of the supporting rod, and a fixing shell is arranged on one side of the extension rod. According to the utility model, the pressing block is pressed downwards, the spring is compressed under stress, then the pressing block descends into the positioning groove, and then the extension rod is dragged to enable the movable rod to move in the supporting rod in a limited manner; and the pressing block is moved to the interior of the next clamping groove and then is reset to the interior of the clamping groove by virtue of the elasticity of the spring, so that the current extending distance is positioned, and the effect of conveniently adjusting the use length is achieved.

The present invention relates to the technical field of medical devices, and discloses a traversal calculation method and system for acetabular cup coverage rate and acetabular roof coverage rate, including the following steps: Step 1: Construct a pelvic model and a spherical model where the acetabular cup is located, and establish a coordinate system; Step 2: Determine the parameters and their ranges; Step 3: Solve the intersection points of the pelvic model and the spherical model where the acetabular cup is located; Step 4: Divide and identify the area embedded in the pelvis and the intersection line triangle area; Step 5: Identify the area embedded in the pelvis and the intersection line triangle area on the acetabular cup; Step 6: Identify the area embedded in the pelvis and the intersection line triangle area of the acetabular cup above the plane where the rotation center is located; Step 7: Calculate the acetabular cup coverage rate and acetabular roof coverage rate at this offset position; The present invention can quickly and accurately calculate the acetabular cup coverage rate and acetabular roof coverage rate at all possible installation positions, helping doctors obtain the optimal reconstructed rotation center position, the radiographic abduction angle of the acetabular cup, and the radiographic anteversion angle during total hip arthroplasty.

The application provides a kind of based on deep learning's full hip joint postoperative leg length difference calculation method and system, it is related to medical technology field, can realize the accurate evaluation of the postoperative condition of the patient of full hip arthroplasty surgery, method includes: obtaining the hip image of the patient after hip arthroplasty surgery;Based on the target recognition network of deep learning, identify the bilateral femur region in hip image, ischium region, the first key point position located in bilateral femur region and the second key point position located in ischium region;According to the first key point position, second key point position and ischium region, determine the leg length difference of the patient's double legs.The system executes the method.The application is based on the hip image of the patient after hip arthroplasty surgery, calculates the leg length difference of the patient's double legs after hip arthroplasty surgery, and realizes the accurate evaluation of the recovery condition of the patient after hip arthroplasty surgery according to the leg length difference of the patient's double legs.

The application relates to the technical field of clinical medicine, and particularly discloses a lower limb nerve detection method and device in artificial total hip arthroplasty. The method comprises the following steps: acquiring performance state data of a lower limb nerve detection device, monitoring intraoperative environment data of artificial total hip arthroplasty, comprehensively analyzing to obtain a nerve detection accuracy evaluation value; recording electrode pair waveform data, comprehensively analyzing to obtain an electrode pair waveform abnormality evaluation value; correcting a parameter according to the waveform abnormality evaluation to obtain a waveform abnormality evaluation threshold value, and performing abnormality feedback. The application provides a lower limb nerve detection method and device in artificial total hip arthroplasty, which can help doctors to identify the existence and degree of nerve injury, help to distinguish different types of nerve injury, and thus formulate a targeted treatment scheme, can accurately locate the nerve injury, and can also monitor the recovery progress of the nerve function, help to timely adjust the treatment scheme, and improve the treatment effect.

According to the reinforcement learning-based two-dimensional total hip replacement prosthesis type selection method and device, the medium, the program product and the terminal provided by the invention, the prosthesis type selection model is constructed based on the Unity platform and the reinforcement learning algorithm, so that a proper prosthesis is automatically selected according to the medullary cavity condition of a patient and preoperative planning is carried out, the operation efficiency and accuracy are remarkably improved, and the operation cost is reduced. And errors caused by manual operation are reduced. Meanwhile, the model supports personalized setting, a labeling scheme can be customized according to patient requirements, personalized prosthesis type selection is achieved, and individual requirements of different patients are met. Besides, the model has expansibility, can be used for preoperative planning to a certain extent, can be applied to automatic planning in other surgical fields in the future, and has important clinical application value.

The invention discloses a precise acetabular cup implanting device for an artificial hip joint replacement surgery. A calibration rod and a positioning rod are connected around the same fixed shaft and are provided with positioning pieces for positioning a target point. The distance between the positioning piece and the fixing shaft and the included angle between the positioning rods can be adjusted. The calibration rod is provided with a calibration groove with an upward opening. The supporting rod is arranged on the outer shell in a penetrating mode and used for being connected with the acetabular cup and serving as a holding handle. The calibration piece is connected and matched with the calibration groove, and the spatial position of the implantation assembly connected with the positioning assembly serves as the initial position. And the angle calculation module calculates an anatomical front inclination angle and an anatomical abduction angle in real time according to the offset between the current position and the initial position of the implanted component. Visualization of the front plane and the sagittal plane of the pelvis of the human body is achieved, and operation personnel can be guided to correctly place the body position in pre-operation training and operation. And the anatomical front inclination angle and the anatomical abduction angle corresponding to the current implanted component can be calculated and informed in real time, so that accurate implantation of the acetabular cup is realized.

The invention provides a hip joint anatomical site prediction system, a preoperative and postoperative evaluation system and a storage medium, and belongs to the technical field of medical data processing. The system comprises an input module for inputting hip joint image data to be recognized of a patient; the data processing module is used for inputting the hip joint image data to be recognized into the deep learning network model, and obtaining anatomical sites and anatomical regions in the hip joint image data to be recognized; and the output module is used for outputting the anatomical sites and the anatomical regions obtained through recognition, calculating parameters according to the anatomical sites and the anatomical regions, and outputting preoperative planning or postoperative evaluation based on prediction of the anatomical information. The system is high in accuracy and robustness, the operation efficiency of clinical hip joint dysplasia is improved, digitization of a total hip replacement preoperative planning and postoperative evaluation system is promoted, the burden of a patient is relieved, parameter standardization is facilitated, and wide application prospects are achieved.

A safety broach for use in arthroplasty for hip joints, and a system including the same. The system may further include a segmented or otherwise flexible reamer and an implant. The safety broach includes a hollow interior passage that serves to guide the reamer when the safety broach is in place in the bone. The system may include any number of sizes of safety broaches, segmented reamers, and implants. In any case, such a safety broach may be capable of assisting with arthroplasty for hip joints (or any other joint), while typically providing enhanced safety and reliability of the arthroplasty.

The present application relates to a method for planning placement of an acetabular shell in a total hip arthroplasty (THA) procedure. Functional alignment of a 3D image of a pelvis includes identifying reference points on each 2D image of a weight-bearing pelvis, identifying corresponding reference points on a 3D image of the pelvis in a non-weight-bearing position, constructing a reference on the 2D images based on the reference points on each respective 2D image, constructing a corresponding reference on the 3D image based on the reference points on the 3D image, and aligning the corresponding reference of the 3D image with the references of the 2D images to provide a functionally aligned 3D image to more accurately plan placement of the acetabular shell.

The application provides a kind of based on deep learning's calculation method and system of postoperative eccentricity of total hip arthroplasty, it is related to medical technical field, can realize the accurate evaluation of the postoperative condition of the patient of total hip arthroplasty surgery, method includes: obtaining the hip image of the patient after hip arthroplasty surgery;Key point position and target area in the hip image are identified based on the target recognition network of deep learning;According to the key point position and the target area, the eccentricity of the patient is determined.The system executes the method.The application is based on the hip image of the patient after hip arthroplasty surgery, calculates the eccentricity of the patient after hip arthroplasty surgery, to realize the accurate evaluation of the recovery condition of the patient after hip arthroplasty surgery.

Provided herein is a computer-implemented method including obtaining values for non-modifiable risk factors, each defining an immutable patient characteristic determined to impact a likelihood that a complication results from an arthroplasty procedure. The system obtains first candidate values for modifiable risk factors of the patient defining a mutable characteristic of the patient or the arthroplasty procedure. The first candidate values are determined to minimize the likelihood that the complication results from the arthroplasty procedure. The system obtains second candidate values for the modifiable risk factors of the patient determined to maximize the likelihood that the complication results from the arthroplasty procedure. The system determines a personalized risk interval that represents a range of modifiable risk for the patient with respect to the arthroplasty procedure including determining (i) a lower bound and (ii) an upper bound for the personalized risk interval; and providing an output indicative of the risk interval.

The present invention discloses a femoral neck measurement method, system, device and medium based on optical positioning. The method includes: measuring the affected limb after installing the femoral stem prosthesis through an optical positioning probe, and calculating the actual length of the femoral neck required for the affected limb according to the osteotomy surface of the affected limb determined after installing the femoral stem prosthesis; determining the selected femoral head prosthesis and femoral neck prosthesis according to the calculated actual length of the femoral neck and the femoral neck length of the healthy limb measured before surgery; measuring the length of the affected limb after implanting the femoral head prosthesis and the femoral neck prosthesis, and constraining the length difference between the healthy limb and the affected limb by adjusting the femoral neck length of the affected limb. By using optical measurement technology in total hip arthroplasty to measure and calculate the errors caused by surgical operations, the present invention can determine the actual effect achieved during the surgical execution in a relatively simple scenario, so that medical staff can timely adjust the selected prosthesis according to each stage of the surgery, improving the surgical quality.

The invention provides a bone ingrowth type integrated silicon nitride ceramic acetabular cup used in total hip arthroplasty, and relates to the field of medical clinic. The silicon nitride light-cured coating is prepared from the following raw materials in parts by weight: 58 to 75 parts of silicon nitride composite powder, 16.9 to 26.3 parts of light-cured resin, 2.85 to 15.3 parts of a diluent, 0.153 to 1.46 parts of an initiator, 0.002 to 0.028 part of an ultraviolet inhibitor, 0.27 to 2.9 parts of a dispersing agent, 0.015 to 0.18 part of a flatting agent and 0.024 to 0.143 part of a de-foaming agent. According to the ceramic acetabular cup, the silicon nitride ceramic acetabular cup with the coating can be directly in press fit with the acetabulum in the operation, osseointegration is achieved between the silicon nitride ceramic acetabular cup and the acetabulum, a ceramic lining does not need to be used, and the problems that in the prior art, the acetabular cup and the ceramic lining are mistakenly assembled, deformation is generated when the metal acetabular cup is in press fit, and consequently the ceramic lining is broken are solved to a certain extent.

Apparatus and methods for preventing intraoperative periprosthetic femoral fracture in total hip arthroplasty (THA), by determining the implant position and femur bone condition changes during the THA by sensing changes in real time. The apparatus operates with a broach or stem, which is inserted into the femur; an auto-impactor; and a diversity of sensors on the interface adapter between the auto-impactor and the broach / stem. The apparatus and methods indicate the quality of implant insertion and enable early detection and warning of approaching the propensity to the intraoperative periprosthetic femoral fracture point by using quantifiable sensor data and trends and feeding real-time information into a decision support algorithm.

The application provides a THA postoperative acetabular prosthesis angle evaluation method and system based on multi-modal data fusion and a computer readable storage medium. The THA postoperative acetabular prosthesis angle evaluation method based on multi-modal data fusion comprises the following steps: acquiring a double lower limb CT image of a patient before total hip arthroplasty; wherein the coverage range of the double lower limbs is from above the hip joint to below the knee joint; performing three-dimensional reconstruction on the double lower limb CT image to clearly display detailed anatomical information of the pelvis and the double lower limbs of the patient; using a biplane X-ray acquisition system to acquire an anteroposterior and lateral X-ray image of the double lower limbs of the patient in a weight-bearing position, and determining the positional relationship of the acetabular prosthesis and the related anatomical landmarks of the skeleton relative to the overall force line of the lower limbs in the weight-bearing state; fusing the preoperative CT data and the postoperative biplane X-ray data to form a fusion image in a three-dimensional space, and performing accurate measurement of the postoperative acetabular prosthesis anatomical anteversion angle, anatomical inclination angle, functional anteversion angle and functional inclination angle on the image.

Systems and methods for use of an instrument for preparing a bone for joint replacement is provided. In various embodiments, the instrument comprises a tool frame, a drive interface, a drive shaft, at least one torque interface, and a plurality of bone sculpting tools interlocked to form at least one continuous loop. Methods and systems for preparing a femur for total hip arthroplasty are also provided.

The invention relates to the technical field of image processing, in particular to a total hip replacement dislocation evaluation system based on image processing, realizes full-process automatic analysis from image acquisition to risk visualization, and has the main advantages that the recognition precision of an anatomical structure is remarkably improved by an intelligent segmentation and three-dimensional reconstruction technology based on deep learning; manual errors are reduced; in combination with biomechanical analysis of habitual actions and static prosthesis matching parameters, risk quantification of dynamic and static combination is realized; a high-risk area is positioned objectively through weighted fusion of multi-dimensional parameters and threshold comparison.

The application discloses a kind of calculation method and system of optimal placement orientation of acetabular cup in total hip arthroplasty, belong to surgical instrument field: obtain the CT data of patient and construct three-dimensional model, identify each point in three-dimensional model, establish three-dimensional coordinate system according to pelvis landmark point and femoral head rotation center point, determine femur initial position of movement according to femoral head rotation center point and femoral landmark point.According to femur form and pre-set hip joint range of motion, the space femoral neck range of motion is drawn.Based on the space femoral neck range of motion, the centroid of its surface is calculated, and the ray is formed by extending from the femoral head rotation center point to the centroid direction, and the orientation of the ray in the three-dimensional coordinate is used as the optimal placement orientation of the acetabular cup.The personalized femur form and joint range of motion of the patient are considered, and the optimal acetabular orientation is given according to different prostheses, which provides a clear surgical target and guidance for the surgeon, thereby reducing the risk of dislocation after hip arthroplasty and greatly improving the reliability of acetabular cup placement.